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Патент USA US3089452

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May 14, 1963
_315mm
3,089,442
TUFTING METHOD AND APPARATUS
A TTORNE Y
May 14, 1963
J. T. SHORT
3,089,442
TUFTING METHOD AND APPARATUS
Filed May 5, 1962
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INVENTOR.
JoeT. Short
BY
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ATTORNEY
May 14, 1963
.1_-r. SHORT
3,089,442
TUFTING METHOD AND APPARATUS
Filed May 3, 1962
3 Sheets-Sheet 5
INVENTOR.
Joe T. Short
BY
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MM,
ATTORNEY
United States Patent G "ce
1
3,ll89,442
Patented May 14, 1S63
2
needle enters the backing sheet, the pile yarn is inserted
3,089,442
TUFTING NIETHGD AND APPARATUS
Joe T. Short, West Point, Ga., assigner to international
Leasing Corporation, Wilmington, Del., a corporation
of Delaware
Filed May 3, 1962, Ser. No. 192,242
11 Claims. (Cl. i12-79)
in the form of a loop. Then, as the needle is Withdrawn,
the loop is left in the fabric. The amount of yarn sup
plied to a loop during a loop forming cycle determines the
height of the formed loop. and since the air stream will
project from the needle all of the yarn that is supplied to
the needle by the yarn delivery means, loop height may
be controlled by controlling the yarn delivery means.
A more complete understanding of the invention and
This invention relates to the making of pile fabric, and
more particularly. to a multiple needle tufting machine 10 an awareness of many of its advantages will `he gained
from a consideration of the following detailed description
and method of producing wide yardage goods such as floor
of the embodiment illustrated in the accompanying draw
covering materials.
ing4 in which:
Multiple needle tufting machines have been in general
FIGURE 1 is a somewhat diagrammatic transverse
use for a number of years. In a typical commercial in
stallation of the type used prior to the present invention, 15 cross sectional view of a multiple needle tufting machine
constructed in accordance with the invention;
the formation of pile loops or tufts is accomplished
FIGURE 2 a vertical cross sectional view taken along
through the interaction of needle and looper elements dis
the line 2_2 in FIGURE 3 and illustrating the hollow
posed on opposite sides of a backing sheet. Both the
needle and the needle carrier assembly for the machine
needles and the loopers are arranged in long rows extend
ing transversely of the backing sheet and the backing sheet 20 shown in FIGURE 1;
FIGURE 3 is a partial plan View of the needle and
is advanced longitudinally. Each of the needles has an
needle carrier assembly;
eye near its free end through which a pile yarn is thread
PlGURE 4 is an exploded view illustrating in elevation
ed. All of the needles move together toward and away
portions of a pair of intermeshing pattern bars of the
from the backing sheet. As a needle moves towards the
`backing sheet, it carries with it a pile yarn and projects or 25 type used in the yarn feeding means shown in FIGURE
l; and
inserts a loop of this pile yarn through the backing sheet,
FIGURES 5, 6i l', and 8 are diagrammatic views illus
and then the looper element moves into the pile loop to
trating pile loop forming operations carried out by the
hold the loop as the needle is withdrawn from the back
nir-chine of FÍGURE 1.
ing sheet.
The frame of the machine includes a base portion 2
With this type of equipment the maximum loop height 30
and an upper housing unit 4 extending from one side of
that can be produced is determined by the position of the
the machine to the other. Uprights 6 located at the ends
looper elements relative to the backing sheet. However,
shorter loops may be formed by various backdrawing
techniques in which yarn is withdrawn from loops that
have been released by the looper elements. Such tech
niques had been used extensively in the production of floor
covering materials having high-low pattern effects.
Although these known methods and machines will serve
of the machine support the upper housing unit 4 in spaced
relation to the base portion 2 of the frame, and suitable
fabric feeding and guiding means including rollers 8 and
1li advance a backing sheet 12 across the base portion 2
in the zone between the uprights 6 in a conventional
manner. The backing sheet 12 ordinarily is a woven jute
fabric, but any suitable material may be used.
As the backing sheet l2 is advanced, it moves through
many diiliculties have been encountered in actual manufac 40
a tufting zone where pile loops 14 are inserted there
turing operations. The equipment must be considered as
through. ln this zone. the `backing sheet l2 is supported
delicate, both from the standpoint ofthe tine adjustments
from below by a plurality of tine elements 16 secured to
that are required and from the standpoint of the ease and
the base portion 2 of the machine and it is held against
frequency with which many of the parts may be bent or
broken. Moreover, production is slower than is desired, 45 substantial upward movement by a presser member 18
carried by ‘bracket means 2t! secured to the upper housing
and the maintenance of a high degree of product uniform
4. The presser member lââ is provided with openings 22
ity is difficult. The use of certain otherwise desirable
in vertical alignment with the spaces between adjacent
pile yarns, such as texturized multiñlament nylon, has
ones of the tines i6 and also in vertical alignment with
proved to `be particularly troublesome.
It is a general object of this invention to provide im 50 the needles 24 of the machine.
These needles 2li- are hollow and are mounted on a
proved tufting methods and apparatus that will overcome
needle carrier 2a which is moved down and up cyclicallyr
these disadvantages. A more spcciñc object of the inven
to insert the free lower end portions of the needles 24
tion is to provide new tufting methods for producing yard
into the backing sheet 12 and to withdraw the needles
age goods at higher speeds and with greater reliability than
has been possible heretofore and to provide apparatus of 55 24 from the backing sheet l2. In the illustrated embodi
ment, the motion of the needle carrier 26 is a simple
simple and Sturdy construction which can be used with
to produce a range of commercially acceptable products,
reciprocating motion. With this type of needle motion.
facility in carrying out such methods.
it is preferred that the advance of the backing sheet 12
In a preferred embodiment of the invention, the pile
be intermittent so that the backing sheet l2 need not
yarns are inserted through the backing sheet by hollow
needles having yarn delivery channels through which air 60 move during the portion of the machine cycle when the
lower end portions of the needles 24 are inserted into
is caused to flow at high velocity. The air streams apply
the backing sheet.
forces to the pile yarns tending to project these yarns
The drive for the needle carrier 26 may include an
from the open ends of the needles, but these forces may
eccentric 28 rotatable with a driven shaft 3l) within a
be overcome by holding forces applied to the yarn passing
to the needles. In the invention these holding forces are 65 bearing member 32. The bearing member 32 is pivot
applied by suitable yarn delivery means that serve to re
lease to the needles controlled amounts of yarn during
ally connected at 34 to the upper end of a push rod 36
mounted for vertical sliding movement in a bearing mem
each loop forming cycle.
The formation of loops is brought about by moving
the hollow needles back and forth so as to periodically
ber 3S carried by the upper housing unit 4 of tbe rne
chine. The lower end of the push rod 36 is connected
rigidly to the needle carrier 26 so that the needle carrier
project their discharge ends through the backing sheet and
26 will move up and down es the eccentric 28 rotates
then Withdraw the needles from the backing sheet. As a
about thc axis ofthe driven shaft 30.
3,089,442
3
4
It will be observed from FIGURE l that there are no
the axis of the tube so as to provide a point 74 and a
loopers or looper operating mechanisms beneath the
tapered wall 76. In this embodiment, the angle at which
backing sheet 12 in the tufting zone.
the lower end of the needle tip 70 is cut away causes
the outlet opening at the lower end of the hollow needle
This represents a
signiiicant departure from the machines in general use
prior to the present invention. Such looper elements
have always been sources of operational difficulties and
maintenance expense. They necessitated line adjustments
in spacing and timing and they were frequently bent or
broken during use. Since the present invention requires
no loopers, the machine structure has been greatly simpli 10
24 to face downwardly and forwardly in the direction
of the advance of the backing sheet 12.
The body 72 of each of the needles 24 is also tubular
and has an axial opening therein communicating with
the axial opening in the tip 70 to provide a ñow channel
tied and it is more reliable in operation.
Pile yarns 40 for forming the loops 14 may be sup
Downwardly inclined openings 78 in the wall of the
needle body 72 provide orifice means through which air
plied from any suitable yarn supply or source, such as
a creel, not illustrated. The movements of the pile yarns
40 from the yarn supply toward the needles 24 are con
trolled so as to make available to the needles predeter
may enter the needle passageway.
mined lengths of yarn sufficient for the formation of
stitches containing pile loops of the desired heights. A
number of different types of means for controlling the
or passageway through the needle.
As air moves from
the high pressure chamber formed by the interior of the
needle carrier 26 through the restricted orifice means 78,
its pressure decreases and its velocity increases so that
the air issues from the orifice means 78 in jet form.
It is preferred that the orifice means 78 be such as
to reduce the pressure of the air below atmospheric pres
yarns in the required manner are known in the art. The 20 sure at the outlet of the orifice means. With this arrange
ment an additional draft of air downwardly through the
particular means chosen for illustration in the drawings
open upper end 80 of the axial opening in the body 72
as an example is one that can be used in the production
of fabrics having pile of the same height throughout or
fabrics having patterns of high and low pile.
In the embodiment shown in FIGURE l, the pile
is induced.
It will be observed that the internal passageway through
yarns 40 are positively fed or withdrawn from the yarn
the needle 24 shown in cross section in FIGURE 2 in
cludes portions of three different diameters. The yarn
source and released in a controlled manner to the needles
inlet portion 82 is of small diameter, the outlet portion
24 by a feed mechanism 42 of the notched bar type.
84 is of larger diameter, and an intermediate portion 86
is of still larger diameter. Although this relationship is
This mechanism is well known, and it need not be de
scribed in detail here. It will suñ'ice to point out that 30 not essential, it is believed to `have some advantages. The
the pile yarns are engaged by intermeshing pattern bars
small cross section of the inlet portion 82 minimizes air
44 and 46 mounted on endless carriers 48 and 50 that
tiow through this portion when the pile yarn 40 has been
are guided through a yarn feeding zone by suitable means
threaded through the needle, and the enlarged portion 86
52 and 54, The intermeshing pattern bars 44 and 46
provides a zone where the lair tiow patterns may be
stabilized somewhat.
cause the yarns 40 to assume undulating paths as they
pass through the feeding zone. As shown in FIGURE
4, the individual pattern bars have notches 56 of vary
ing depths in their edges, so that the lengths of yarn
stored in a row of these undulations may be different.
When the endless carriers 48 and 50 move a pair of
pattern bars 44 and 46 out of the zone of intermeshing,
different amounts of yarn may be released to the difter
ent needles 24 in a manner well understood in the art.
In instances where level pile fabrics are desired, the
notches in the pattern bars may be of uniform depths
or the notches may be omitted entirely.
The invention also requires means for causing liuid to
liow through the hollow needles 24 during at least a
portion of each machine cycle. It is presently preferred
that this requirement be met by continuously supplying
air under pressure to the needles, In the illustrated
embodiment, a high pressure air source is represented by
a tank 56 carried by bracket means 58 attached to an
upper portion of the machine framework. A flexible
conduit 60 is provided for conducting the air from the
source 56 to a fitting 62 on the needle carrier 26.
The interior construction of the needle carrier 26 and
the manner in which the air is admitted to the hollow
needles 24 is illustrated best in FIGURE 3. The needle
carrier 26 is made up of a housing 64 and a removable
top wall 66. The housing 64 has bottom, side and end
walls, so that when the removable top wall 66 is posi~
tioned properly and held in place on the housing 64,
as by screw means 68, the interior of the needle carrier
26 provides a large internal air chamber or manifold
into which air from the flexible conduit 60 may pass
through the litting 62.
Each needle 24 may be a unitary body, or it may be
made up of a plurality of parts that are either connected
together or are connected to the needle carrier 26 in
such a way as to fix their positions relative to one an
other. The needle 24 shown in FlGURE 3 is made up
of a tip 70 and a shank or body 72 soldered together.
The tip portion 70 of each needle 24 is a cylindrical
tube and its lower end is cut away at an acute angle to
Air flows at high velocity through the outlet portion
84 of the passageway from the portion 86 and out of
the outlet opening at the lower end of the needle'. When
a yarn 40 is threaded through the needle 24, this high
velocity air stream applies forces to the pontion of the yarn
located within and beyond the needle urging these por
tions downwardly. As a length of yarn is released by
the yarn feeding means 42, it will be fed downwardly
through the needle 24 and projected from the lower end
thereof.
The body 72 of each needle 24 fits within a circular
recess 88 in ‘the bottom Wall of the housing 64 and rests
against a shoulder 90 at the lower end of the recess. The
upper end of the needle body 72 passes through an open
ing 92 in the t-op wall 66 of the needle carrier 26 and
is held against upward movement by a plate member 96
detachably secured, as by screws 97, to the top wall 66.
A shoulder 98 on the needle body bears against the under
side of `the member 96. Suitable seals, such as O-rings,
should be provided to prevent the escape of air from the
interior of the needle carrier in the zones where the
needles pass through the walls thereof.
As shown best in FIGURE 2, the portion of the needle
body 72 that is cut away to provide the shoulder 98 also
provides a straight vertical surface 100 that may cooperate
with a corresponding vertical surface on the member 96
to assure proper angular orientation of the needle 24.
FIGURE 2 also illustrates the relationship of the
needles 24 to each other. In the illustrated embodiment
there are three rows 102, 104, and 106 spaced from each
other in the direction of the advance of the backing sheet
12 with each extending across the full width of the ma
chine. The needles 24 in the different rows are staggered
with respect to each other, so that the `axis of a needle
in the row 104 and the axis of a needle in the row 106 is
located between the axes of adjacent needles in the row
102. With this arrangement, it is possible to produce pile
fabric in which the transverse spacing between longitudi
nal rows of loops is quite small. In this connection, it
should be noted that the number of rows of needles that
3,089,442
6
5
the formation of high-low loop patterns in accordance
may be employed effectively in the machine of this inven
tion is greater than the number that can be employed in
a machine having conventional looper elements beneath
the backing sheet.
with the present invention does not depend upon the use
of backdrawing techniques. With this type of operation
each loop is projected by the air stream to its ñnal size.
Although no backdrawing of pile yarn need take place,
Attention now will be directed to FIGURES 5 through Ul
many of the advantages of the invention may be realized
8 which illustrate diagrammatically the relative positions
when the operation is set up to effect some backdrawing.
of the backing sheet 12, a needle 24 and a pile yarn 4i)
For example, if the amount of yarn released to a needle
during portions of two successive cycles of machine oper
during the down stroke of the needle is substantially less
ation. In all of these views the backing sheet 12 is shown
as having «thereon a long or high loop 14a and a short lf) than that required to give the loop being formed a size
large enough to permit it to extend loosely about the
or low loop 14b formed during earlier cycles of machine
leading edge of the outlet opening in the needle, some
operation. FIGURES 5 and 6 then depict operations
yarn may be drawn back from the preceding loop. How
that take place during a cycle when a low loop 14C is be
ever, since this backdrawing is not relied upon for the
ing formed, and FIGURES 7 and 8 depict operations that
production of pattern effects it need not be so great as to
take place during a cycle when a high „loop 14d is being
produce severe tension in the pile yarn, and many of
formed.
the difficulties heretofore experienced in connection with
FIGURE 5 illustraties the relative positions of the ele
the backdrawing of thread from previously formed loops
ments when `the needle 24 has reached its lowermost posi
are not encountered.
tion. In m-oving to this position, the point 74 of the
Similarly, if the machine of this invention is set up to
needle would have first penetrated the backing sheet 12 20
effect backdrawing of the yarn from the loop being
and then the opening so formed would have been en
formed, as by the insertion of a conventional yarn jerker
larged by the passage through the backing sheet of the
in the yarn path from the yarn feeding means to the
tapered edge 76 of the lower end of the needle 24. Of
yarn inlet opening of the hollow needle, the loop forming
course, enlargement of the opening in the backing fabric
operation may still be carried out without experiencing the
to a size sufîicienlt to permit it to receive the full diameter
difficulties that have been characteristic of this type of
of the tip pontion of the needle 24 results in some corn
backdrawing operation as carried out in the past. Since
pression of adjacent portions of the backing strip 12,
the air streams maintain the yarns under tension at all
times, there is no danger that slack in the yarns passing
tinue only far enough to expose the ourlet opening at the 30 to the needles will cause these yarns to become entangled
with each other.
lower end of the needle beneath the backing sheet l2.
as indicated at 108.
The downward movement of the needle 24 need con
The low and relatively constant tension applied to the
pile yarns makes it possible to produce fabric having
The actual feeding of pile yam 40 into the loop 14e be
ing formed is accomplished by the air stream flowing out
of the needle 24. In this connection, it is noted that the
better uniformity and enhanced pattern definition char
acteristics. Even the highly elastic filament nylon yarns
that have been so difficult to handle with the apparatus
feed of yarn 40 into the loop 14C may be substantially
independent of the movement of the needle 24. In PIG
used heretofore may be processed with ease.
URE 5, for example, Vthe height of the loop 14e is sub~
stantially greater than that required for the loop to pass
loosely around the leading edge of the outlet opening in
Although a single embodiment of the invention has
been illustrated and described in detail, various modifica
tions and changes will suggest themselves to persons
the needle 24 but is less than the final height that will
be assumed by this loop, even though the needle is at its
skilled in the art.
the air stream continues to feed yarn into the loop 14e.
The feeding of yarn into the loop 14e may continue even
after the tip 76 of the needle 24 has moved to a position
above the backing sheet 12 to fill out this loop and give
it its final height. All of the yarn 40 made available to
the needle 24 during the cycle will be fed out of the
needle during that cycle, and the height of the loop 14C
is related directly to the amount of yarn released by the
yarn feeding means 42 during the cycle.
The resiliency of the backing sheet material causes
the ope-ning formed by the needle 24 to close substan
tially when the needle 24 is withdrawn. An additional
It is intended therefore that the fore
going description be considered as exemplary only, and
the scope of the invention be ascertained from the fol
lowing claims.
I claim:
l. A multiple needle tufting machine comprising means
lowermost position in this view.
As the needle 24 moves upwardly from the position
shown in FIGURE 5 ‘to the position shown in FIGURE 6,
for advancing a backing sheet along a path, a needle
carrier extending across said path, a plurality of hollow
needles mounted on said needle carrier and each having
a free end portion projecting toward the backing sheet,
each of said needles having a iiuid passageway therein
terminating in an outlet opening in said free end por
tion of the needle and having a yarn inlet opening spaced
from said outlet opening, means for moving said needle
r carrier cyclically back and forth to insert the free end
closing action is brought about during the succeeding
cycle so that, in the final product, the llegs of the loops are
held firmly Iby the backing sheet material.
portions of said needles through the backing sheet far
enough to expose their outlet openings on the opposite
side of the backing sheet and then to withdraw said
needles from the backing sheet, means for positively feed
ing along paths leading to the yarn inlet openings of said
It will be observed that the total excursion of the 60 needles controlled lengths of yarn suihcient for the forma
needles 24 from their highest points to their lowermost
tion of stitches containing pile loops, and means for flow
points may be quite small. This makes it possible to
ing fluid through said ñuid passageways and out of said
operate the machine satisfactorily at speeds higher than
outlet openings in said needles to move said lengths of
the speeds of the machines known heretofore.
65 yarn relative to said backing sheet out of said outlet
FiGURE 7 illustrates the needle 24 in its lowermost
openings and away from said needles to form a pile fabric
position ou the next cycle. This view is similar to FIG1
having pile loops extending from said backing sheet to
URE 5, but it `will be observed that a greater amount of
heights related to the lengths of yarn fed by said feeding
pile yarn 40 has been fed into the loop 14d than had
been fed into the loop 14e during this portion of the 70
means.
preceding cycle.
FIGURE 8 is similar to FIGURE 6. lt shows the
elements at a time when enough yarn has been fed into
2. A multiple needle tufting machine comprising means
for advancing a back sheet along a path, a needle carrier
extending across said path, a plurality of hollow needles
mounted on said needle carrier and each having a free
end portion projecting toward the backing sheet, each of
the loop 14d to give it its final size.
From FIGURES 5 through 8, it will be evident that 75 said needles having a longitudinally extending duid pas
3,089,442
7
8
sageway therein terminating in an outlet opening in said
free end portion of the needle and having a yarn inlet
are exposed on said opposite side of said backing sheet
to move said lengths of yarn relative to said backing sheet
out of said outlet openings and away from said needles
to form a pile fabric having pile loops extending from
said opposite side of said backing sheet to different
heights related to the different lengths of yarn released
to the yarn inlet openings of said needles.
5. A multiple needle tufting machine comprising means
opening spaced from said outlet opening for receiving
a yarn leading from a yarn supply, means for moving
said needle carrier cyclically back and forth to insert the Ca
free end portions of said needles through the backing
sheet far enough to expose their outlet openings on the
opposite side of the backing sheet and then to withdraw
said needles from the backing sheet, means for positively
withdrawing from the yarn supply and releasing to the
yarn inlet openings of said needles during each cycle of
movement of said needle carrier predetermined lengths
of yarn sufficient for the formation of stitches containing
permanent pile loops, and means for flowing ñuid through
said fluid passageways and out of said outlet openings in
said needles substantially throughout the periods during
which said outlet openings are exposed on said opposite
side of said backing sheet to move said predetermined
lengths 0f yarn relative to said backing sheet out of said
outlet openings and away from said needles to form a
pile fabric having pile loops extending from said opposite
for advancing a backing sheet along a path, a needle car
rier extending across said path, a plurality of hollow
needles mounted on said needle carrier and each having
a free end portion projecting toward the backing sheet,
each of said needles having a longitudinally extending
fluid passageway therein terminating in an outlet opening
in said free end portion of the needle and having a yarn
inlet opening spaced from said outlet opening, means for
moving said needle carrier cyclically back and forth to
insert the free ends of said needles through the backing
sheet far enough to expose their outlet openings on the
opposite side of the backing sheet and then to withdraw
said needles from the backing sheet, feed means including
a pair of endless carriers having intermeshing pattern
side of said backing sheet to heights related to the lengths
of yarn released to the yarn inlet openings of said
needles.
3. A multiple needle tufting machine comprising means
for advancing a backing sheet along a path, a needle
carrier extending across said path, a plurality of hollow
dulating paths and means for advancing said carriers to
release to the yarn inlet openings of said needles during
each cycle of movement of said needle carrier predeter
mined lengths of yarn sutiicient for the formation of
needles mounted on said needle carrier and each having
stitches containing pile loops, and means for flowing
bars thereon for supporting a plurality of yarns in un
fluid through said fluid passageways and out of said out
each of said needles having a ñuid passageway therein 30 let openings in said needles to move said predetermined
lengths of yarn relative to said backing sheet out of said
terminating in an outlet opening in said free end portion
outlet openings and away from said needles to form a
facing forwardly in the direction of advance of the back~
pile fabric having pile loops extending from said backing
ing sheet and having a yarn inlet opening spaced from
sheet.
said outlet opening for receiving a yarn leading from a
6. A multiple needle tufting machine comprising means
yarn supply, means for moving said needle carrier cycli
for advancing a backing sheet along a path, a needle
cally back and forth to insert the free end portions of
carrier extending across said path, a plurality of hollow
said needles through the backing sheet far enough to
needles mounted on said needle carrier and each having
expose their outlet openings on the opposite side of the
a free end portion projecting toward the backing sheet,
backing sheet and then to withdraw said needles from
each of said needles having a longitudinally extending
the backing sheet, means for controlling the movements
fluid passageway therein terminating in an outlet opening
of the yarns from the yarn supply toward the yarn inlet
in said free end portion of the needle and having a yarn
openings in said needles to make available to the yarn
inlet opening spaced from said outlet opening for re
inlet openings of said needles predetermined lengths of
ceiving a yarn leading from a yarn supply, means for
yarn sutlicient for the formation of stitches containing
moving said needle carrier cyclically back and forth
permanent pile loops, and means for ñowing fluid through
along a path at one end of which the free end of each
said fluid passageways and out of said outlet openings in
needle is located between the needle carrier and the
said needles to move said lengths of yarn relative to said
backing sheet and at the other end of which each needle
backing -sheet out of said outlet openings and away from
penetrates the backing sheet to expose the outlet opening
said needles to form a pile fabric having pile loops ex
thereof on the side of the backing sheet opposite said
tending from said backing sheet to heights related to the
needle carrier, means for controlling the movements of
lengths of yarn made available to said needles.
4. A multiple needle tufting machine comprising means
the yarns from the yarn supply toward the yarn inlet
for advancing a backing sheet along a path, a needle
openings in said needles to make available to the inlet
carrier extending across said path, a plurality of hollow
opening of each needle during each cycle of movement
needles mounted on said needle carrier and each having 55 of said needle carrier a predetermined length of yarn
a free end portion projecting toward the backing sheet,
greater than the distance said backing sheet is advanced
each of said needles having a fluid passageway therein
between successive ones of the points where said needle
terminating in an outlet opening in said free end portion
penetrates said backing sheet plus twice the minimum
of the needle and having a yarn inlet opening spaced from
distance of penetration through the backing sheet of the
said outlet opening for receiving a yarn leading from
edge of the outlet opening of said needle, and means for
a yarn supply, means for moving said needle carrier cy
ñowing iluid through said ñuid passageways and out of
clically back and forth to insert the free end portions of
said outlet openings in said needles to move said prede
said needles through the backing sheet far enough to ex
termined
lengths of yarn relative to said backing sheet
pose their outlet openings on the opposite side of the
backing sheet and then to withdraw said needles from 65 out of said outlet openings and away from said needles
a free end portion projecting toward the backing sheet,
the backing sheet, means for positively withdrawing from
the yarn supply and releasing to the yarn inlet openings
to form a pile fabric having pile loops extending from
said backing sheet to heights related to the lengths of
yarn made available to said needles.
of said needles during each cycle of movement of said
7. A multiple needle tufting machine as defined in
needle carrier predetermined lengths of yarn suflicient
for the formation of stitches containing pile loops with 70 claim 6 wherein said means for controlling the move
ments of the yarns includes means for making available
the lengths released to different needles during one cycle
different predetermined lengths of yarn to different ones
being diiïerent and the lengths released to the same needle
of said needles during a given cycle of movement of said
in different cycles being different, and means for flowing
needle carrier and for making available to each of at
fluid through said Huid passageways and out of said out
least some of said needles different predetermined lengths
let openings in said needles when said outlet openings
3,089,442
10
of yarn during diñerent cycles of movement of said
needle carrier.
8. A multiple needle tufting machine comprising means
stitches containing permanent pile loops, each of said
needles having at least one inclined orilice therein com
municating at one end with said passageway in the needle
and at the opposite end with said air chamber for direct
ing a jet of air along said passageway toward said outlet
opening in said needle to impel yarn relative to Said
backing sheet out of said outlet opening and away from
said needle.
for advancing a backing sheet along a path, a needle
carrier extending across said path, a plurality of hollow
needles mounted on said needle carrier and each having
a free end portion projecting toward the backing sheet,
each of said needles having a longitudinally extending
10. A method of making tufted fabric having longi
air passageway therein terminating in an outlet opening
in said free end portion of the needle and having a yarn 10 tudinal and transverse rows of pile loops extending from
a hacking sheet comprising a cycle including the steps
inlet opening spaced from said outlet opening, means
for moving said needle carrier cyclically »hack and forth
along a path at one end of `which the free end of each
needle is located between the needle carrier and the hack
ing sheet and at the other end of which each needle pene
trates the ‘hacking sheet to expose the outlet opening
thereof on the side of the backing sheet opposite said
needle carrier, patterning means for positively feeding
along a path leading to the inlet opening of each needle
of advancing the backing sheet longitudinally, forming a
transverse row of openings in said backing sheet and
simultaneously inserting portions of a plurality of pile
yarns through said openings to provide pile loops on
one side of said backing sheet each having a leg extend
ing through one of said openings back toward a yarn
supply, positively feeding from said supply additional
lengths of pile yarn and simultaneously applying to said
during each cycle of movement of said needle carrier 20 legs air streams flowing through said openings toward
said loops to impel additional lengths of yarn into said
a controlled length of yarn sufñcient for the formation
loops to enlarge said loops.
of a stitch including a pile loop, and means for admitting
1l. A method of making patterned tufted fabric hav
to said passageways jets 0f air directed toward said out
ing longitudinal and transverse rows of pile loops of
let openings to impel said lengths of yarn relative to said
backing sheet out of said outlet openings and away from 25 dilïerent heights extending from a backing sheet com
prising a cycle including the steps of advancing the back
said needles to form a pile fabric having pile loop ex
ing sheet longitudinally, forming a transverse row of
tending from said backing sheet.
openings in said backing sheet and simultaneously in
9. A multiple needle tufting machine comprising means
serting portions of a plurality of pile yarns through said
for advancing a backing sheet along a path, a needle
carrier extending transversely of said path and having a 30 openings to provide pile loops on one side of said back
ing sheet each having a leg extending through one of
high pressure air chamber therein, a plurality of hollow
said openings hack toward a yarn supply, positively feed
needles mounted on and extending through said needle
ing from said supply additional lengths of pile yarn and
carrier and each having a free end portion projecting
simultaneously applying to said legs air streams ñowing
toward the backing sheet, each of said needles having a
longitudinally extending passageway therein terminating 35 through said openings toward said loops to impel addi
tional lengths of yarn into said loops to enlarge said
loops, said cycle being repeated indeñnitely while feed
and having a yarn inlet opening at the end thereof op
in an outlet opening in said free end portion of the needle
ing dilferent lengths of yarn to at least some of said air
posite said outlet opening, means for moving said needle
streams during different cycles.
carrier cyclically back and forth to insert the free ends
of said needles through the backing sheet far enough to 40
References Cited in the tile of this patent
expose said outlet openings on the opposite side of the
backing sheet and then to withdraw said needles from the
UNITED STATES PATENTS
backing sheet, and means for positively feeding along
paths leading to the yarn inlet openings of said needles
during each cycle of movement of said needle carrier 45
controlled lengths of yarn sufficient for the formation of
1,830,463
2,422,126
2,599,226
Foster et al ____________ __ Nov. 3, 1931
Parker ______________ -- June 10, 1947
Briern ________________ __ June 3, 1952
2,932,339
Odenweller __________ __ Apr. l2, 1960
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